Object Thrown Downward Height Calculation · PhysicsBowl 2016 #6

Physics · mechanics

Problem

An object, thrown straight downward with a speed of

20.0 \frac{m}{s}

, takes

2.00 s

to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance. (Use

g = 10.0 \frac{m}{s^2}

) (A)

20.0 m

(B)

40.0 m

(C)

50.0 m

(D)

60.0 m

(E)

80.0 m